package com.wolfeyes.common.utils.datetime;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @title 日期处理的工具类
 * @author yanyljava
 * @create 2020-09-03 14:04
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

	public static String YYYY = "yyyy";

	public static String YYYY_MM = "yyyy-MM";

	public static String YYYY_MM_DD = "yyyy-MM-dd";

	public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

	public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

	private static String[] parsePatterns = {
			"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
			"yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
			"yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

	/**
	 * 获取当前Date型日期
	 *
	 * @return Date() 当前日期
	 */
	public static Date getNowDate()
	{
		return new Date();
	}

	/**
	 * 获取当前日期, 默认格式为yyyy-MM-dd
	 *
	 * @return String
	 */
	public static String getDate()
	{
		return dateTimeNow(YYYY_MM_DD);
	}

	public static final String getTime()
	{
		return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
	}

	public static final String dateTimeNow()
	{
		return dateTimeNow(YYYYMMDDHHMMSS);
	}

	public static final String dateTimeNow(final String format)
	{
		return parseDateToStr(format, new Date());
	}

	public static final String dateTime(final Date date)
	{
		return parseDateToStr(YYYY_MM_DD, date);
	}

	public static final String parseDateToStr(final String format, final Date date)
	{
		return new SimpleDateFormat(format).format(date);
	}

	public static final Date dateTime(final String format, final String ts)
	{
		try
		{
			return new SimpleDateFormat(format).parse(ts);
		}
		catch (ParseException e)
		{
			throw new RuntimeException(e);
		}
	}

	/**
	 * 日期路径 即年/月/日 如2018/08/08
	 */
	public static final String datePath()
	{
		Date now = new Date();
		return DateFormatUtils.format(now, "yyyy/MM/dd");
	}

	/**
	 * 日期路径 即年/月/日 如20180808
	 */
	public static final String dateTime()
	{
		Date now = new Date();
		return DateFormatUtils.format(now, "yyyyMMdd");
	}

	/**
	 * 日期型字符串转化为日期 格式
	 */
	public static Date parseDate(Object str)
	{
		if (str == null)
		{
			return null;
		}
		try
		{
			return parseDate(str.toString(), parsePatterns);
		}
		catch (ParseException e)
		{
			return null;
		}
	}

	/**
	 * 获取服务器启动时间
	 */
	public static Date getServerStartDate()
	{
		long time = ManagementFactory.getRuntimeMXBean().getStartTime();
		return new Date(time);
	}

	/**
	 * 计算两个时间差
	 */
	public static String getDatePoor(Date endDate, Date nowDate)
	{
		long nd = 1000 * 24 * 60 * 60;
		long nh = 1000 * 60 * 60;
		long nm = 1000 * 60;
		// long ns = 1000;
		// 获得两个时间的毫秒时间差异
		long diff = endDate.getTime() - nowDate.getTime();
		// 计算差多少天
		long day = diff / nd;
		// 计算差多少小时
		long hour = diff % nd / nh;
		// 计算差多少分钟
		long min = diff % nd % nh / nm;
		// 计算差多少秒//输出结果
		// long sec = diff % nd % nh % nm / ns;
		return day + "天" + hour + "小时" + min + "分钟";
	}

}
